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    CVE-2025-9408

    System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.

    Published:Nov 11, 2025
    Last Modified:Apr 15, 2026
    EPS:Nov 11, 2025
    EPSS Score:0.00012
    CVSS Score:8.2

    Affected Products

    Vendor
    Zephyrproject-rtos
    Product
    Zephyr

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High